Ratio and Proportion Quiz

8 : 4 :: 3.2 : x and 3 : 6 :: 6 : y. What is the ratio of x to y ?

• 3 : 8

• 2 : 15

• 4 : 19

• 1 : 3

Find the ratio between the third proportion of 20 and 50 and the median proportion of 9 and 16

• 25 : 2

• 12 : 125

• 2 : 25

• 125 : 12

If 49 : x :: x : 81, and 64 : y :: y : 169, where x and y are both natural numbers, then find the value of 2x + 3y.

• 348

• 438

• 126

• 312

The third proportion of 10 and 50 is

• 300

• 1250

• 250

• 125

Find the third proportion of 18 and 72.

• 388

• 588

• 288

• 488

If 6, 18, 39, and x are in proportion, then find the value of x.

• 117

• 112

• 139

• 115

If 100 : 250 :: 250 : x, then what is the value of x?

• 250

• 6.25

• 625

• 25

If y : 196 :: 196 : 784, then what is the value of y?

• 16

• 49

• 7

• 4

If 144 : y :: y : 225, and y > 0, find the value of y.

• 130

• 210

• 120

• 180

If 144 : b :: b : 36, and b > 0, find the value of b.

• 12

• 36

• 27

• 72